This product includes 195 U.S. History warm-ups (bellringers), enough for an entire year! The warm-ups include critical thinking prompts, content review, and questions to tap into students' prior knowledge. Open each day with a prompt to engage your students and help them review and think about content they are learning. Warm-ups include images, important U.S. History themes, and come with keys when appropriate. The warm-ups are divided into two PDF files- Semester 1, which covers the foundation